Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael Samuel Shapiro, MD

Otolaryngology Physician in Greenbrae, CA · enumerated 2006 · practices at Kathryn Sexton, M.D., Martin Joffe, M.D. & Katrina Urbach, M.D, Medic.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1881786549

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Registry record

Entity type Individual (Type 1)

Name Michael Samuel Shapiro

Credential MD

Sex Male

Practice address 1000 S Eliseo Drive, Suite 203, Greenbrae, CA, 94904

Phone (415) 925-2020

Fax (415) 925-1870

Enumeration date Sep 29, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License G52829 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Michael Shapiro practice?

The practice location on file with NPPES is in Greenbrae, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Michael Shapiro?

The National Provider Identifier (NPI) for Michael Shapiro is 1881786549, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Kathryn Sexton, M.D., Martin Joffe, M.D. & Katrina Urbach, M.D, Medic Pediatrics Physician · Greenbrae, CA NPI 1083743033

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.